Mechanism #2's emitter side is now prototyped on this branch (delta, normal
unified mode only) and the bytes are verified. Capture what that settled, since
the spec is meant to be published for pager-developer feedback:
- The single per-line emit point in delta and which fields are reachable there
(the gotcha: delta only maintains its line-number counters with --line-numbers
on, so the patch tracks its own), and why a dedicated additive emitter beats
reusing LineNumbersData.
- The pinned v1 wire format (positional, file last so it may contain ';',
empty old-line unless deleted) and the EMIT_OSC456_METADATA env-var handshake.
- Deferred items: the OSC-number terminal audit, wrapped continuation rows, and
header-row attachments.
Also resolves the §6 wire-format open question accordingly.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Record what the #1 prototype settled. The two open questions #1 touches are now
answered (the deleted-line new-line convention is patch.LineNumberOfLine's, and a
deletion carries both line numbers; multi-file diffs split on "diff --git" and
the section parses 1:1 with patch.Parse). Add a §8 capturing what landed, how it
was verified, and the implications for #2.
Two coverage corrections came out of verifying against real pager output, both
worth pinning before the spec is written: delta --color-only qualifies for #1
only *without* line numbers (the gutter pushes the +/- marker off column 0, so a
naive parse is confidently wrong — handled by an integrity check that falls back,
not by teaching the host delta's gutter), and diff-so-fancy strips the +/- markers
entirely, so it's a #2 case, not #1.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Captures a design discussion about the remaining big problem behind the
focused-main-view feature: recovering a diff row's patch-space identity
(file, type, source line) when the rendering came from a pager. Records
the two complementary mechanisms (a host-side parser for
structure-preserving renderings, and a pager-emitted OSC protocol for
ones that restructure), the per-cell carrier with its keyboard/mouse
access rules, the type + old?/new-line payload and why each field is
load-bearing, and the version-negotiation handshake. Design only; no
implementation yet.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
